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3961 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part # 3961
Description  DUAL FULL-BRIDGE PWM MOTOR DRIVER
PDF  10 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3961 Datasheet(HTML) 2 Page - Allegro MicroSystems

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3961
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
FUNCTIONAL BLOCK DIAGRAM AND TYPICAL
BIPOLAR STEPPER MOTOR APPLICATION
TRUTH TABLE
ENABLE
PHASE
OUTA
OUTB
H
X
Off
Off
LH
H
L
LL
L
H
X = Irrelevant
OUT
OUT
C
OUT
ENABLE 1
PHASE 1
CONTROL LOGIC
AND LEVEL SHIFT
OUT
1A
1B
V BB2
BB2
C
2A
2B
S1
REF
R
R
R
RS2
1
OUT
IN
REF
SENSE
2
2
BLANKING
TIME AND
SOURCE
DRIVER T
CONTROL
OFF
UVLO
AND
TSD
CONTROL LOGIC
AND LEVEL SHIFT
BLANKING
TIME AND
SOURCE
DRIVER T
CONTROL
OFF
VOLTAGE
REFERENCE
+
_
MOTOR SUPPLY 2
MOTOR SUPPLY 1
C
V
cc
cc
LOGIC SUPPLY
C
V
BB
BB1
GND
CT2
RT2
RC 2
E 2
IFULL/PD
E 2
RT1
T1
RC1
+
_
SENSE 1
ENABLE 2
PHASE 2
E1
Dwg. GP-049A
50
75
100
125
150
5
1
0
TEMPERATURE IN
°C
4
3
2
25
R
= 6.0
°C/W
θJT
SUFFIX 'B', R
= 40
°C/W
θJA
SUFFIX 'LB', R
= 55
°C/W
θJA
Copyright ©1995, 1996, Allegro MicroSystems, Inc.



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